two small details from the previous patch

activerecord/lib/active_record/explain.rb

@@ -85,7 +85,7 @@ def exec_explain(sqls, binds) # :nodoc:
       # the threshold is set to 0.
       #
       # As the name of the method suggests this only applies to automatic
-      # EXPLAINs, manual calls to +ActiveRecord::Relation#explain' run.
+      # EXPLAINs, manual calls to +ActiveRecord::Relation#explain+ run.
       def silence_auto_explain
         # Implemented as a flag rather that setting the threshold to nil
         # because we should not depend on a value that may be changed

railties/guides/source/active_record_querying.textile

@@ -1396,7 +1396,7 @@ is a class and instance method of +ActiveRecord::Base+:
 
 <ruby>
 silence_auto_explain do
-   # no automatic EXPLAIN is triggered here
+  # no automatic EXPLAIN is triggered here
 end
 </ruby>